Mounting Sensors & Brackets:
Next, you will need to measure and mark where to measure, mark, and drill holes for the
sensors on the clean grain elevator. They mount in the inside & outside face of the elevator,
towards the back of the combine (where filled paddles of grain pass by). The table below shows
the measurements for common combines:
Combine
Model
Distance X (in)
Height Y (in)
Case IH
1660
1.75
41.5
1680
1.75
75.5
2X88
1.75
75.5
7088
1.75
75.5
7120, 8120
1.5
57
New Holland
CR9XX, CR9XXX
1.75
62
TR9X
1.5
43
TX
John Deere
9500
2.25
62
96X0
2.25
62
9X50
2.25
33
9X60
2.25
33
9X70
2.25
33
Gleaner
R7X
1.25
56
Challenger
670
1.5
70
670B
1.75
65
Cat
Use Existing
Sensor Holes
If your model is not shown here, ensure the optical sensors lie in the middle of the clean grain
elevator paddles.
Distance (X) from the back of the clean grain
elevator to the center of the drill hole
Height (Y) from the center of the bearing
to the center of the drill hole
X
Diagram of Optical
Sensor Placement
& Operation